PHILADELPHIA -- A skyscraper-sized game of Pong is ready to go in Philadelphia, hopefully under stars and not rainclouds.

Frank Lee, a Drexel University game-design professor, says Friday's classic Atari video game is on schedule to be played on the facade of a 29-story skyscraper. Hundreds of built-in LED lights at the Cira Centre will replicate the familiar paddles and ball with gamers standing across the Schuylkill River from the building.

It starts at 8 p.m.

Lee says he's watching the weather, in case it rains. If that happens, the game can still be played under tents that will cover the controllers and equipment. But he says the people who come to watch might get wet.

The Pong game will also be played Wednesday, to bookend Philly Tech Week.